Home / 190,087,969.38-285,251,899.32-80,912,966.10

Finding the Fourth Proportional to 190,087,969.38, 285,251,899.32 and 80,912,966.10

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Solution

The fourth proportional to 190,087,969.38, 285,251,899.32 and 80,912,966.10 is: 121,420,505.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,087,969.38 : 285,251,899.32 = 80,912,966.10 : x
  2. Step 2: Convert to fraction form
    190,087,969.38/285,251,899.32 = 80,912,966.10/x
  3. Step 3: Cross multiply
    190,087,969.38x = 285,251,899.32 × 80,912,966.10
  4. Step 4: Simplify right side
    190,087,969.38x = 23,080,577,259,639,772
  5. Step 5: Solve for x
    x = 23,080,577,259,639,772/190,087,969.38
  6. Step 6: Final answer
    x = 121,420,505.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.